Hey guys and gals. I took it upon myself to try to shim the valves last night on my 2003 WR450 and have a few questions. Things went smooth up until reassembly! Also if you take a look at the pic I don't believe the marks on the bucket are suppos to be there? You can see the pin in the cam sticking out and that is what is causing the marking on the bucket. Hopefully you can understand my questions below! 1. when finding TDC aligning marks in site window while turning the crank did not match what the dimples on the cam gears were showing. I did check clearance with both and found it to be the same. 2. upon inspection I found marking on the exhaust left side bucket that came from the pin in the camshaft (shown in the picture). 3. After shimming to match specs and reassembly of the cam cover I once again checked valve clearance and the valve with dimples on the bucket was within spec at .23 and now after reassembly is only at .15??? 4. I decided to put it back together and see if it would start and how it would run. The motor is extremely tight and does not want to turn over freely. It will loosen up for a short time every other revolution but tighten back up again and did not start (I am thinking that was a good thing with the motor spinning tight. I decided it was time to tackle the project as I have only checke clearance twice on the bike and it now has 6,000 miles (dual sported). This time only two valves were out of clearance and both were a bit tighter than spec. The other 3 were right at the low side of spec. Lately it has been getting a bit harder to start when hot and has been puffing a bit of smoke on hard accelleration. Also others following me have been complaining of the smell. I am a salesman not a technician so I am hoping for a bit of help... Oh yeah don't hold the salesman thing against me!